Keystones — Bedrock

Five GCSE retrieval questions · 2 April 2022 · mathsvault.uk/keystones

1. Number

Simplify: 8⁴ × 8²

Answer: 8⁶
2. Algebra

Find the next term: 21, 31, 41, 51, ...

Answer: 61
3. Geometry

Opposite = 15cm, hypotenuse = 30cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 21:24

Answer: 7:8
5. Statistics

Find the mean of: 7, 6, 16, 17

Answer: 11.5

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